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NI 9216/9226 Calibration Procedure

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© National Instruments

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7

EEPROM Update

When an adjustment procedure is completed, the NI 9216/9226

 

internal calibration memory 

(EEPROM) is immediately updated.

If you do not want to perform an adjustment, you can update the calibration date and onboard 

calibration temperature without making any adjustments by initializing an external calibration

setting the C Series calibration temperature, and closing the external calibration.

Reverification

Repeat the 

Verification

 section to determine the As-Left status of the device.

Note

If any test fails Reverification after performing an adjustment, verify that you 

have met the 

Test Conditions

 before returning your device to NI. Refer t

Worldwide 

Support and Services

 for assistance in returning the device to NI.

Accuracy Under Calibration Conditions

The values in the following table are based on calibrated scaling coefficients, which are stored 

in the onboard EEPROM.

The following accuracy table is valid for calibration under the following conditions:

Ambient temperature 20 °C to 28 °C

NI 9216/9226 installed in slot 8 of an cDAQ-9178 chassis

Slots 1 through 7 of the cDAQ-9178 chassis are empty

Note

For operational specifications, refer to the most recent 

NI 9216 Datasheet 

or

 

NI 9226 Datasheet 

online at 

ni.com/manuals

.

Table 6.  

NI 9216/9226 Accuracy Under Calibration Conditions

Module

Gain Error

Offset Error

NI 9216

±0.012%

±0.03 

Ω

NI 9226

±0.013%

±0.3 

Ω

Summary of Contents for NI 9226

Page 1: ...NI 9226...

Page 2: ...est Equipment 3 Test Conditions 3 Initial Setup 3 Verification 4 Accuracy Verification 4 Adjustments 6 Accuracy Adjustment 6 EEPROM Update 7 Reverification 7 Accuracy Under Calibration Conditions 7 Wo...

Page 3: ...NI 9216 circuitry and specifications NI 9226 Getting Started Guide NI 9226 connection information NI 9226 Datasheet NI 9226 circuitry and specifications NI DAQmx Readme Operating system and applicati...

Page 4: ...midity below 80 Allow a warm up time of at least 10 minutes to ensure that the NI 9216 9226 measurement circuitry is at a stable operating temperature Initial Setup Complete the following steps to set...

Page 5: ...llowing procedure to determine the As Found status of the NI 9216 9226 1 Set the calibrator to Standby mode STBY 2 Connect the desired channel of the NI 9216 9226 to the calibrator as shown in Figure...

Page 6: ...x in AIx For example use AI3 for channel 3 c Configure the task timing according to Table 4 d Start the task e Read the samples from the NI 9216 9226 f Average the samples g Stop and clear the task 7...

Page 7: ...ain an array of recommended calibration resistance values d Set the calibrator to a reference value determined by the array of recommended calibration voltages e Set calibrator COMP to 4 wire f Set th...

Page 8: ...djustment verify that you have met the Test Conditions before returning your device to NI Refer to Worldwide Support and Services for assistance in returning the device to NI Accuracy Under Calibratio...

Page 9: ...ined in this manual was developed at private expense and is subject to the applicable limited rights and restricted data rights as set forth in FAR 52 227 14 DFAR 252 227 7014 and DFAR 252 227 7015 Wo...

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